mahjong on Nostr: Invalid reference

{ "id": "480f56f261c8c8e898a79ec2ca152e6bd2f1f595bfb53dcb6c60e1c06b67f7fb", "pubkey": "5ac0427cf0588ae5c9f09aa800e99dbbe4dc19c16afbd322b94c016c085e1c0d", "created_at": 1714874448, "kind": 1, "tags": [ [ "e", "5648f162ae0c486f2667d7daca17e9fa89d2b7790e164cc51f7e73f716021094" ], [ "p", "897bb37449ed3fcea198e260a406733290dc2bedd5a5d447a68472c491baa739" ] ], "content": "Invalid reference", "sig": "2e8ca165cf3e2df5029ed28bb4d80fb2ed9fa21fae6395959d09c006395b54570f110c32fc3bface228efcece4cd12551b1e0e4c0d7e1ce7b23263e5a6cd8b1a" }